If you cough when it gets slightly cold, you should generally consider the following conditions: 1. The possibility of an atopic cough. Patients with an atopic cough have a relatively sensitive airway and throat, and are easily exposed to cold air when the weather gets cold, and after exposure to cold air, they will stimulate the cough receptors in the throat and airway, resulting in coughing symptoms. 2. The presence of chronic airway inflammation, such as the presence of cough 3. The presence of respiratory tract infections, as the body’s resistance decreases when the weather becomes cooler, which can easily cause infections with bacteria or viruses, resulting in respiratory tract infections, leading to coughing and phlegm symptoms, including colds and bronchitis.